Mühlhäuser, Max and Frick, Oliver and Gellersen, Hans-Werner (1994):
Developing Cooperative Media-Integrated Software.
In: Proceedings of the 1994 IFIP World Congress on System Support for Distributed Multimedia-Applications, Hamburg, September 1994, Springer Verlag, Heidelberg etc., Germany, pp. 227-234, [Conference or Workshop Item]

Gellersen, Hans-Werner and Mühlhäuser, Max and Frick, Oliver Herzner, W. (ed.) (1994):
Multiuser and Multimodal Aspects of Multimedia.
In: 1st Eurographics Symposium and Workshop on Multimedia, Graz, Austria, June 1994, Springer Verlag, Heidelberg etc., Germany, pp. 278-297, ISBN 3-211-8257-8,
[Conference or Workshop Item]

Mühlhäuser, Max and Frick, Oliver (1992):
Towards A Modelling Framework for Cooperative Multimedia OLDAs.
In: Proceedings of the Workshop on Objects in Large Distributed Applications at OOPSLA 1992, Vancouver, Kanada, Oct. 1992, [Conference or Workshop Item]